Floor scraper



Apri110, 1928. 1,665,766

N. BINGER FLOOR SCRAFER Filed March 11, 1925 INVENTOR Patented Apr. 10, 1928.

UNIT ED STATES NICKOLAUS SINGER, OF PITTSBURGH, PENNSYLVANIA.

FLOOR SCRAPER.

Application filed March 11', 1925'. Serial No. 14,676.

My invention relates to a floor scraper and the primary object thereof is toprovide a device of the character stated. in a mannor as hereinafter referred to which is conveniently operable to speedily and thorough- 1y clean and smooth a floor of all irregularities.

Further objects of the invention are to provide a floor scraper of the type described which is simple in its construction and, ar-

rangement, strong, durable and efficient in its use, easily operated, adjustable, positivein its action, and comparatively inexpensive to manufacture.

W'ith these and other objects in View which will appear as the description proceeds. the invention is a floor scraper that embodies the peculiar features of construction and novel arrangement of parts hereinafter described in detail, specifically pointed outin the appended claim. and illustrated in the accompanying drawing. which forms a portion of this specification and wherein like numerals of reference designate corresponding part-s throughout the several views and in which:

Figure 1 is a side elevational view of a floor scraper accordance with. my invention.

Figure 2 is a front view thereof with a portion of the frame broken away.

Figure 3 is a longitudinal vertical sectional view of the shoe and associated parts Figure 4 is abottom plan View of the shoe with the frame removed therefrom.

Figures 5 and 6 are respectively front and end views of the planing and scraping blade securing blocks.

Referring in detail to the drawing 1 denotes a tubular frame consisting of an upright member 2. a diagonal member 3. and a horizontal member 4. The latter has its rear end fixedly connected with the upright member 2, adjacent to the upper end thereof. and its forward end is fixedly connected with the diagonal member 3, adjacent to the forward end thereof. The converging lower ends of the upright and diagonal frame members 2 and 3 terminate in a common bearing 4.

A cross-bar 5, provided with a centrally disposed support 6, is carried at the upper end of the upright frame member 2. The support 6 extends into the upper end of the upright tubular frame member 2 'and is adjustable therein by means of a set screw 7 which is threadably mounted in the frame member 2 and engages the support 6 for locking the latter in the adjusted position.

A similarly arranged cross-bar 8, provided with a support 9, is; carried in the forward end of the diagonal frame member 3. Flie support 9 extends into the forward end of the member 3 and is adjustable therein by; means of the set screw 10, which latter is threadably mounted in the frame member 3 and engages the support 9 for lockingthe latter in the adjusted position.

A manually slidable metal stock or shoe 11 is connected with the frame 1 and is substantially rectangular in contour with the forward portions of the side walls 12 thereof convprging to provide the reduced forward end 13. The forward portion of the shoe 11 is provided with a top 14 formed with an opening 15, and with a smooth soled, bottom 16 formed with a comparatively large opening 17. The-rearportion of the shoe 11 is divided from the forward portion thereof by the vertically disposed partition 18. I

The top of the shoe 11 is provided with a pair of spaced apertured ears 19 disposedapproximately at the longitudinal center of the shoe 11. The ears 19' extend parallel with respect to each other, and the bearing 4' of the frame 1 is positioned and pivotal ly secured therebetween by means of the pin 20;

An' eyebolt 21, having its head pivotally connected, as at 22', to the diagonal frame member 3 adjacent to the rear end-"thereof extends through an aperture23 provided therefor in the top 14 at the forward end of the shoe 11. The eyebolt 21 extends into .the shoe 11 and is provided at its lower end with a washer 24 and cotter pin 25 to prevent its disengagement from the shoe 11. A spiral spring 26'is mounted on the e-yebol t 21 intermediate of its head and the top 14 of the shoe 11.

The rear portion of the shoe 11 is provided with a rearwardly inclined, transversely disposed plate 27 formed integral with the side walls 12, of the shoe 11. The plate 27 extends from the upper rear end of the wall 12 to adjacent to the rear end of bottom 16, thereby providing a transversely disposed slot 28 between the lower end of the plate 27 and the rear end of the bottom 16.

A forwardly inclined plate 29, of slightly greater width than the width of the shoe 11, is integrally connected at its upper end with IOU llO

the upper end of the plate 27. The plate 29 projects beyond. the rear end of the side walls 12, providing a clearance 30 between the latter and the lower end of the plate 29.

The plate 27 provided with a comparatively heavy base 31 and the lower end edge of the outer face of the plate 27 forms a seat for the planing blade 33. The lower end edge of the inner face of the plate 29 likewise forms a seat for the scraping blade35.

The planing blade 33 is fixedly heldin position against its seat by a clamp block 36, and the cutting edge thereof projects through the slot 28. The outer face of the block36 is formed with a transversely extending groove 37 for the reception of the. transversely extending rod 38 which latter has its ends fixed in respective side walls 12, of the shoe 11, adjacent to the outer face of the plate 27. The lower portion of the clamp block 36 is formed. to provide the shortinner leg and the elongated outer leg The planing blade 33 is positioned in the clamp block 36 between the legs 32 and 34, and projects slightly beyond the lower end of the leg A clamping screw 39 is threadably 1 onnted in the upper end of the block 36 and engages the outer face of the plate 27, As the block 36 is fulcrumed against the rod 38, the adjustment of the screw 39 in the block 36 will serve to lock the planing blade 33 in position against its seat on the lower end edge of the plate 27, or effect its release therefrom.

The scraping blade 35 is securely held against its seat by means of a clamp block 40 which latter is identical in construction to the block 36 above described. The block 40 is likewise fulcrumed against a transversely disposed rod 41 fixed in the side walls 12, of the shoe 11. A clamping screw 12 is threadably mounted in the upper end of the block 40 and engages the inner face of the plate 29. The adjustment of the screw 4L2 will actuate the clamp block 40 to lock the scraper blade 35 in the operative position against its seat on the lower end edge of the plate 29, or to effect its release therefrom. i v

My improved floor scraper is intended to be operated by two persons, one of whom pulls on the cross bar 8, carried at the forward end of the frame member 3, while the washer 24 and cotter pin 25 to the eyebolt 21 within theshoe 11. j j

In practice the shoe 11 is drawn across the floor to be smoothed, the planing blade 33 roughly loosening the material to be removed, the scraping blade 35 scraping the floor to a smooth finish. The scraper blade 35 being ofgreater width than the planing blade 33 the entire area worked by the latter during the operation of the device will be covered and overlapped by the following scraper blade 35. The scrapings are ejected from the shoe 11 through theclearances 30- The adjustment of the cross bars 5 and 8 allow them to be swung to any position de sired in respective frame members 2 and 3, thereby permitting of the operation of the device in close proximity to a wall of a room.

By the use of my improved device, a floor may be quickly and emciently cleaned and freed from all irregularities with comparative ease. I

What I claim is z, r,

in a floor scraper a manually slidable shoe including a body portion having side walls and a top and bottom, an upstanding partition formed integral with said side walls at the rear ends of said top and bottom, a pair of oppositely extending inclined plates merging into each other at the tops thereof, formed integral with said side walls rearwardly of said partition and one arranged. in advance of the other, the forward plate spaced from said partition and the. lower part of the rear plate extended and spaced from the rear ends of said sides. and a sur face working tool clamped. to the forward face of each of said plates.

In testimony whereof I affix my signature.

NICKOLAUS BINGER. 

